NFL Commissioner Roger Goodell has sent a memo to all 32 teams threatening "significant discipline" to anyone caught leaking confidential information gathered on draft prospects to the public.

The Associated Press obtained the memo, which was sent on Wednesday night after reports that LSU defensive back Morris Claiborne allegedly scored poorly on the Wonderlic test. The exam is used by NFL teams to try to gauge a prospect's intelligence, problem-solving ability and cognitive skills.

League rules prohibit officials from disclosing the results, but scores have routinely been leaked for years.

In his memo, Goodell stresses that Wonderlic scores, personal and family histories and drug tests are to be kept strictly confidential. He writes that disclosing that kind of information "can be extremely damaging to players, clubs, and the league."